proper care for peach tree sprouts

I planted 24 peach seeds and they all sprouted and I transplanted them from the little seedling paper pots into plastic ice cream buckets. I used Scott's potting soil. The tree sprouts were doing good but now they are wilting. They are getting watered regularly. What do I need to do to save them? I've spent a lot of time getting this far and don't want to lose them.